Johan bore and albert skoglund



- J. BORE AND A. SKOGLUND, STEAM CLEANSING APPARATUS, PARTICULARLY FOR VERTICALLY ARRANGED SMOKE TUBES. APPLICATION rlLEb FEB. 14. 1919.

1,310,733. Patented July 2:2, 1919.

- 1B ra. Skoyhwui Ja 45m" JOHAN BORE AND ALBERT SKOGLUNID, OF GOTTENBO RG, SWEDEN, ASSIGNORS,.TO ARVI IID WIESTERBERG, OF STOCKHOLM, SWEDEN. i'

' STEAM CLEANSING APPARATUS, PARTIcULARLYroR vEnTI'cALLY-ARR NeED SMOKE-TUBES.

Application filed February 14, 1919. Serial No. 277,081.

To all whom it may concern Be it known that we, JOHAN BORE and ALBERT SKOGLUND, subjects of the Kingaround a horizontal axis underneath the ver tical smoke tubes, the steamjet being directed against the lower ends of such smoke tubes by turning the nozzle around its horizontal axis. The nozzle preferably is provided with a plug-like extension, which is rotatably mounted in a chamber provided with a lateral opening for the entrance of the steam, the said plug-like extension forming a plug-cork with the chamber by means of which the steam jet may be totally shut off.

The accompanying drawing illustrates an embodiment of the invention applied to an air-preheater of the type generally employed in connection with the device for forced draft, particularly in marine boilers.

Figure 1 is a front View of an air-preheater provided with two steam cleansing devices, and Fig. 2 is a vertical section showing the steam cleansing apparatus in side elevation. Fig. 3 is a plan view of the nozzle in a larger scale and Fig. 4 a vertical section of the apparatus taken as a whole on an enlarged scale. Fig. 5 represents a cross section on the line AA in Fig. 4 and V Fig. 6 is a cross section'on the line BB in Fig. 4.

The nozzle 1 is provided with a plug-like extension 2 which is rotatably mounted in a chamber 4 provided with a lateral supporting stem thebore of which forms an inlet 3 for the entrance of the steam. The nozzle is provided with two openings arranged on diametrically opposite sides of the axis of the member 2, an inlet opening 5 being disposed in the member 2 within the chamber 4, while the other opening or the outlet opening 6 is disposed in the nozzle The present invention relates to a steam outside the chamber 1. The inlet 3' is extended in the direction of the rotary movement of the plug so far as to enable the member 2 to be movedabout half a revolution or thereabout, Without shutting off the entrance of steam" from this inlet (Fig. 6).

Specification of Letters Patent. Patented July 22, 1919;

The outlet 6 of the nozzle is enlarged outwardly in the axial direction of the member 2 in such manner that an elongated, narrow orifice is formed. at the mouth of the nozzle, the central part 'of such orifice being preferably somewhat choked as at 15 (Fig. 3) so as to bring about a uniform distribution of the escaping steam. The membeer 2 is kept in place within the chamber 4.

by a collar 7, a recess 8 being provided in the end of such member so as to enable a key 9 to be inserted therein in order to turn the nozzle, which key may be aflixed to the member 2 by means of a transverse wedge 10 entered into a notch 11 in the member 2.

As will be seen from Figs. 1 and 2 the apparatus is placed at the bottom 12 of the smoke uptake 16 underneath the vertical smoke tubes 13 of the preheater so that the apparatus may be operated from the outside by means of the key 9. The steamis being supplied to the apparatus through a pipe 14, which is connected tothe inlet 3. According to Fig. 1 there are two such ap parat'us in operative use but evidently the number of apparatus is suited to the number of smoke tubes 13 or to the particular conditions depending on the boiler construction so as to enable a thorough cleansing of all of the tubes to be effected.

The invention is of course not limited to 'the embodiment hereinbefore described, in that various 'constructional modificatlonsmay be made without departing from the spirit or the scope of the invention. If, for instance, the apparatus is to be employed for the cleansing of'tubes which are not vertically disposed, the axis of rotation of the member 2 is given a corresponding position which, however, under all circunr stances must be perpendicular or nearly perpendicular to the axis of the tubes 13.

In the use of the apparatus, and provided no cleansing is taking place, the nozzle is turned with its opening 6 downward, the opening 5 being thereby directed upward and cut oif from the inlet 3 through the wall of chamber 4. When cleansing is to be done, the apparatus is turned into the position shown in Figs. 4 and (i, the steam then escaping freely through .the against the tubes 13 thereabove (right part of Fig. 1). These tubes having been cleansed, the apparatus is turned to the right or the left by means of the key 9, so that the steam ,jet hits those of the tubes 13 which are placed further toward the sides of the set of tubes (left part of Fig. 1).

I claim:

The combination with a tubular chamber having a lateral supporting stem the bore of which forms an inlet to the. casing, and the inlet being enlarged at its point of communication with the casing, of a nozzle including a body having a portion reduced to form an extension designed to be rotatably received in the chamber and leaving an annular shoulder designed to abut one edge of the chamber, the body being provided opening (5' with a longitudinal bore terminating short of and closed by the ends of the body, the outer end of the body having a flared outlet opening leading laterally from the bore and provided with a spraying orifice, the extension having a lateral inlet opening near the opposite end of the bore and diametrically opposite the outlet opening. a collar detachably secured to the outer projecting end of the extension and abutting the other edge of the casing for coacting with the shoulder in preventing longitudinal movement of the body, and a key connected to the extension for oscillating the body.

In testimony whereof we afiix our signatures in presence of two witnesses.

JOHAN BORF. ALBERT SKOGLU YD.

\Vitnesses:

HANS BYTTUCE, C. A. LUNDBERG. 

